Refrigerating apparatus



Feb. 7, 1939. PHILVIPP 2,146,484

' REFRIGERATING APPARATUS Filed Feb. '7, 1958 INVENTOR. Lawns/ms 19. P/fiL/PP ATTORNEY.

V Patented Feb. 7,1939 Q 2 14 UNITED STATES PATET OFF C' REFRIGERATIN G APPARATUS Lawrence A. Philipp,'Detroit, ltfich, assignor to Nash-Kelvinator Corporation, Detroit, Mich, a corporation of Maryland Application February 7, 1938, Serial No. 189,030

2 Claims. (01. 62-115) This invention relates to an improvement in frigerant is compressed by the compressor I8; refrigerant cooled compressors, and more particu- The compressed refrigerant is conducted from the larly to sealed units, where the motor and comcompressor by conduits 25 and 25 to a condenser pressor are contained in a hermetically sealed 21. The conduits 25 and 26 are connected by a casing or housing. suitable coupling 28 carried by the cover 2| for.

The invention consists in providing the sealed conducting the refrigerant from the comprescasing with a jacket for forming a chamber and sor 18 to the condenser 21. Part of the gaseous into which refrigerant, which has passed through refrigerant delivered to the condenser 21 will be a condenser, is delivered for extracting the heat condensed therein, and this gaseous and liquid from the motor-compressor unit, and then the refrigerant will flow by a conduit 29 into the 10 refrigerant which has become somewhat gasifled chamber I 6 formed between the walls of the is delivered to a second condenser for removing shells l0 and I2, where the liquid refrigerant the heat from the refrigerant and converting it will again be vaporized in extracting or taking into a liquid state. up the heat generated and transmitted from the In the accompanying drawing the figure illusmotor 11 and compressor l8, and will thereby 15 trates somewhat diagrammatically an arrangecool the motor-compressor. The vapor in the ment of parts for accomplishing the invention. chamber I6 is conducted therefrom by a conduit In the drawing, [0 represents a dome-shaped 30 leading from the outer shell l2 to another or shell or housing, which is open at one end, and second condenser 3|. This' condenser 3| will cause having an outwardly extending flange H. This the refrigerant vapor to be condensed and from 20 shell is enclosed or surrounded by a similar shell which it will be conducted by a conduit 32 to a l2 of larger size for forming a chamber [6 besuitable receiver and float mechanism 33 before tween the sealed walls and tops or ends of the being delivered to the evaporator 38 by means shells. The shell i2 is provided with an outof a conduit 31 which connects the receiver with U wardly extending flange l3 superimposed on the the evap flange II, and a suitable packing I4 is interposed It will be en fr m t f r infi that the between the flanges to form a hermetically sealed gaseous refrigerant as it leaves the compressor joint therebetween. g l8 will be condensed, in part at least, in the con- Mounted within the shell II and preferably denser 21, and this mixed gas and liquid revertically disposed therein is a unit consisting frigerant will then be delivered to the chamber of an electric motor l1 and a compressor l8. The It for cooling the motor-compressor unit housed upper portion of the motor I! engages a shoulder within the shells l0 and I2. 'The liquid refrig- I3 formed on the inner wall of the shell l0, and erant in the chamber l6 will be vaporized by the an annular ring 20 engages the lower end of heat generated within the shell by the motor and a the motor I! and a cover or bottom plate 2| compressor, and asthe heat is absorbed by the 5 for supporting the motor I! and compressor l8 as refrigerant the motor, compressor and shell will a unit within the shell. 01 course, other means be cooled. v of supporting the unit within the shell may be The refrigerant which has been vaporized in provided, but in this manner, upon the removal the cooling of the motor-compressor unit is now of the cover 2|, the motor and compressor can conducted by a conduit 30 to a second condenser 40 be readily inserted or removed as a unit. The 3| where the heat laden gas will be cooled and bottom or cover plate 2| is attached to the flanges converted into liquid refrigerant to be trans-l 'H and I3 of the shells by bolts 22, 22 for closing mitted under pressure to an evaporator. the shell. I0 and for hermetically sealing the It is to be understood that any suitable promotor-compressor unit within the shell III as well vision may be employed in assisting in condens t as supporting the unit therein. ing the refrigerant in the condensers 21, 3|, as

The vaporized refrigerant is returned from an for instance by. fans or water. Also, that the evaporator 38 of a refrigerating system to the arrangement and combinations of parts may be shell I, by a conduit 23 connected by a suitable departed from that set forth herein without de- 3 coupling to the cover. The refrigerant then parting from the spirit and scope of the invenpasses through another portion of conduit 23 tion and hence it is not the intent to be limited into interior of shell III. The refrigerant in by the precise construction herein illustrated. shell 10 passes through compressor intake con- I claim: duit 35 which has its inlet end in open communi- 1. Refrigerating apparatus comprising amotor cation with conduit 23 and this vaporized recompressor unit for increasing the pressure of and converting it into liquid refrigerant.

2. Refrigerating apparatus comprising inner and outer shells arranged in spaced relation for ai iaiea forming a chamber therebetween, said shells each having a closed end and connected together at their free ends, a motor-compressor unit therein, a condenser, a conduit for conducting gaseous refrigerant from the compressor to the condenser, means for conducting condensed refrigerant from the condenser to the chamber between the shells for extracting the heat from the motor-compressor unit, and a condenser in communication with.

said chamber for receiving the gaseous refrigerant I therefrom and converting the refrigerant into a liquid refrigerant.

LAWRENCE A. PHIIJPP. 

